Require a C++11 compiler

[lyx.git] / src / frontends / tests / biblio.cpp

diff --git a/src/frontends/tests/biblio.cpp b/src/frontends/tests/biblio.cpp
index 5a7a376d3e40a33086b9eb07cee86a7cb456eff2..067cc9b4481b5bd6ae14385b3d1ba5a2e8a00a39 100644 (file)
--- a/src/frontends/tests/biblio.cpp
+++ b/src/frontends/tests/biblio.cpp
@@ -20,10 +20,17 @@ string const escape_special_chars(string const & expr)
 
        // $& is a ECMAScript format expression that expands to all
        // of the current match
-       // The '$' must be prefixed with the escape character '\' for
-       // boost to treat it as a literal.
-       // Thus, to prefix a matched expression with '\', we use:
+#ifdef LYX_USE_STD_REGEX
+       // To prefix a matched expression with a single literal backslash, we
+       // need to escape it for the C++ compiler and use:
+       return lyx::regex_replace(expr, reg, "\\$&");
+#else
+       // A backslash in the format string starts an escape sequence in boost.
+       // Thus, to prefix a matched expression with a single literal backslash,
+       // we need to give two backslashes to the regex engine, and escape both
+       // for the C++ compiler and use:
        return lyx::regex_replace(expr, reg, "\\\\$&");
+#endif
 }